Well Maintained Used Komatsu PC55 Mini Crawler Excavator Durable Structure

I. Basic Specifications

Item | Value / Description
Model Name | Komatsu PC55MR-5 / PC55MR-3 Mini Tracked Hydraulic Excavator
Operating Weight | Approx. 5,150 – 5,280 kg (depending on configuration, track model, etc.)
Engine Model | Komatsu 4D88E-7 / 4D88E-6 Water-cooled 4-cylinder diesel engine
Rated Power | ~28.3 kW / 38 hp @ 2,400 rpm (net power)
Fuel Tank Capacity | ~65 L
Hydraulic Oil Tank Capacity | ~20 L (approx. 5.3 gal)
Standard Bucket Capacity | 0.055 – 0.18 m³ (different bucket types optional)

⛏️ II. Engine and Power

Item | Parameter / Description
Engine Type | Direct injection, water-cooled diesel engine, mechanically cooled
Number of Cylinders | 4 cylinders
Displacement | ~ 2.189 L (2,189 cm³)
Speed 2,400 rpm (rated)
Emission Standards: Multi-market versions meet Tier 4 / Stage requirements (depending on region)

🏗️ III. Hydraulic System & Travel
Indicators Values ​​(Typical)
Hydraulic System Type: Variable Displacement Main Pump + Load Sensing System (New Model MR-5)
Maximum Hydraulic Flow Rate: ~ 153 L/min (Example: PC55MR-5 Full Circuit, etc.)
Travel Speed ​​(High/Low): ~ 4.6 km/h / 2.6 km/h
Swing Speed: 9 rpm
Grading Ability: ~ 30° (≈ 58%)
Maximum Traction Force: ~ 4,280 kgf

⛏️ IV. Digging and Operating Performance (MR-5 / MR-3 General Range)
Operating Indicators Values ​​(Approx.)
Maximum Digging Depth: ~ 4.13 m (PC55MR-5 Data)
Maximum Unloading Height: ~ 4.24 m (PC55MR-3 Estimated)
Maximum Digging Radius: ~ 6.0 – 6.2 m
Bucket digging force ~ 39.8 kN (≈ 4,060 kgf) (ISO 7451 approximation)
Boom digging force ~ 24.4 kN (≈ 2,490 kgf)
Ground pressure ~ 28.9–29.6 kPa (depending on tracks/configuration)

📏 V. Dimensions (Typical MR-5)
Dimension Item Value (approx.)
Transport Length ~ 5,550 mm (PC55MR-5M approx. 5.55 m)
Transport Width ~ 1,960 mm
Transport Height ~ 2,590 mm
Track Foot Width ~ 400 mm
Tail Turning Radius ~ ~1,060–1,070 mm (estimated)

🔧 VI. Fuel & Hydraulic Systems
System Capacity (approx.)
Fuel Tank ~ 65 L
Hydraulic Tank ~ 20–55 L (20 L single system; some data indicate 55 L) Engine oil ~7.5–8.1 L Coolant ~8.9 L Final drive fluid ~0.7 L